Implement audio constraints for PeerConneciton API

content/renderer/media/media_stream_dependency_factory_unittest.cc

Index: content/renderer/media/media_stream_dependency_factory_unittest.cc
diff --git a/content/renderer/media/media_stream_dependency_factory_unittest.cc b/content/renderer/media/media_stream_dependency_factory_unittest.cc
index 33a23097c203c37012cd8547e7b14673abeaf049..00bf54584835af77624a7b99ebaba0045da454d6 100644
--- a/content/renderer/media/media_stream_dependency_factory_unittest.cc
+++ b/content/renderer/media/media_stream_dependency_factory_unittest.cc
@@ -88,6 +88,7 @@ class MediaStreamDependencyFactoryTest : public ::testing::Test {
 
   void CreateNativeSources(WebKit::WebMediaStreamDescriptor* descriptor) {
     MediaSourceCreatedObserver observer;
+    WebKit::WebMediaConstraints audio_constraints;
     dependency_factory_->CreateNativeMediaSources(
         WebKit::WebMediaConstraints(),
         WebKit::WebMediaConstraints(),
@@ -100,6 +101,7 @@ class MediaStreamDependencyFactoryTest : public ::testing::Test {
     // Change the state of the created source to live. This should trigger
     // MediaSourceCreatedObserver::OnCreateNativeSourcesComplete
     if (dependency_factory_->last_video_source()) {
+      dependency_factory_->last_audio_source()->SetLive();
       dependency_factory_->last_video_source()->SetLive();
     }
     EXPECT_TRUE(observer.result());